SSL_pending(3) | OpenSSL | SSL_pending(3)

# NAME

SSL_pending - obtain number of readable bytes buffered in an SSL object

# LIBRARY

libcrypto, -lcrypto

# SYNOPSIS

#include <openssl/ssl.h>
int SSL_pending(const SSL *ssl);

# DESCRIPTION

SSL_pending() returns the number of bytes which are available inside ssl for immediate read.

# NOTES

Data are received in blocks from the peer. Therefore data can be buffered inside ssl and are ready for immediate retrieval with SSL_read(3).

# RETURN VALUES

The number of bytes pending is returned.

# BUGS

SSL_pending() takes into account only bytes from the TLS/SSL record that is currently being processed (if any). If the SSL object's read_ahead flag is set (see SSL_CTX_set_read_ahead(3)), additional protocol bytes may have been read containing more TLS/SSL records; these are ignored by SSL_pending().

Up to OpenSSL 0.9.6, SSL_pending() does not check if the record type of pending data is application data.

# SEE ALSO

SSL_read(3), SSL_CTX_set_read_ahead(3), ssl(3)

2015-05-25 | 1.0.1u